Energy storage power station battery fire extinguishing test platform and test method

Abstract

The application relates to a kind of energy storage power station battery fire extinguishing test platform and test method, and the innovation lies in that: test platform includes energy storage battery simulation cabin, gas fire extinguishing system, compressed air foam fire extinguishing system, fire linkage controller and data acquisition system, the data acquisition system is used to collect the temperature of energy storage battery simulation cabin, the flow and pressure of gas fire extinguishing system and compressed air foam fire extinguishing system, test method steps are, through gas fire extinguishing system or compressed air foam fire extinguishing system or by gas fire extinguishing system and compressed air foam fire extinguishing system cooperate to extinguish fire in energy storage battery simulation cabin, after extinguishing fire, the data acquisition system collects the parameters after extinguishing fire again and feeds back to fire linkage controller.The application simulates the complex situation of battery fire in energy storage battery cabin, has multiple fire extinguishing modes, and tests the fire extinguishing performance of different modes, which can provide support for the fire extinguishing technology research and development test of diversified energy storage power station energy storage battery.

Description

Technical Field

[0001] This invention specifically relates to a battery fire extinguishing test platform and test method for energy storage power stations, belonging to the field of fire safety technology for energy storage power stations. Background Technology

[0002] Energy storage is a crucial foundation and key supporting technology for building future energy systems with a high proportion of renewable energy and promoting the green transformation of energy development. With the rapid development of energy storage technology, energy storage battery compartments, due to their high energy density and high voltage characteristics, have become a key area for fire prevention and control. With the continuous commissioning of electrochemical energy storage power stations, mechanical, electrical, and thermal abuse within the battery compartment can lead to battery short circuits, causing heat accumulation and rapid temperature rise inside the battery. This can result in the breakdown of flammable gases in the electrolyte, accompanied by the generation of significant decomposition heat. The heat and flammable gases generated by battery thermal runaway cannot dissipate in time, further increasing the battery temperature. When the temperature exceeds the safety threshold, the battery will explode. Battery fires are rapid and intense. Given the layout characteristics of energy storage compartments, high-density and high-voltage battery compartments are prone to explosion at high temperatures. Once a fire or explosion occurs, it can spread rapidly and threaten surrounding energy storage compartments, causing significant economic losses and social impact.

[0003] Patent document CN222123963U discloses a perfluorohexanone fire extinguishing system suitable for energy storage power stations. It achieves atmospheric pressure storage and precise spraying of perfluorohexanone fire extinguishing agent, avoids annual inspection requirements, ensures efficient fire protection for lithium battery energy storage compartments, and ensures the stability and safety of fire extinguishing effect. However, it cannot conduct multi-system combined fire extinguishing tests and is difficult to provide comprehensive technical testing and evaluation conditions, which limits the research and development and evaluation of supporting fire extinguishing technologies.

[0004] Patent document CN211528633U discloses an integrated testing device for the thermal runaway characteristics of energy storage batteries, including a central control device, a test chamber, an insulated chamber located inside the test chamber, and a gas detection unit. This solution achieves high-precision integrated testing and analysis of the thermal runaway characteristics of energy storage batteries by adopting an insulated design in the integrated testing device and combining efficient and convenient testing methods, thereby mastering the key characteristics of thermal runaway of energy storage batteries. However, it cannot evaluate the fire extinguishing effect of the fire extinguishing system on battery fires.

[0005] Patent document CN216908971U discloses a gas and foam two-phase fire extinguishing control method for energy storage battery packs. This method involves setting up a fire extinguishing assembly including a perfluorohexane (PFH) fire extinguishing component and a compressed air foam fire extinguishing component. The PPHH fire extinguishing component targets small battery packs, such as PACK-level and cluster-level battery packs. However, it cannot target small batteries like PACK-level and cluster-level battery packs with compressed air foam, thus failing to effectively measure the effectiveness of compressed air foam in battery fire research and providing insufficient comprehensive technical testing and evaluation conditions. Summary of the Invention

[0006] The purpose of this invention is to provide a fire extinguishing test platform and test method for energy storage power station batteries, which simulates the complex situation of battery fire in the energy storage battery compartment, has multiple different fire extinguishing modes, and tests the fire extinguishing performance through multiple fire extinguishing modes, which can provide support for the research and development and testing of fire extinguishing technologies for diverse energy storage power station batteries.

[0007] To achieve the above objectives, the first technical solution of the present invention is: a fire extinguishing test platform for energy storage power station batteries, the innovation of which lies in: including an energy storage battery simulation chamber, a gas fire extinguishing system, a compressed air foam fire extinguishing system, a fire linkage controller, and a data acquisition system.

[0008] The gas extinguishing system includes an extinguishing agent storage container, a first zone control valve assembly, and a module-level release device. The extinguishing agent storage container and the module-level release device are connected by piping. The first zone control valve assembly is installed on this piping and is electrically connected to the fire alarm control panel.

[0009] The compressed air foam fire extinguishing system includes compressed air foam branches and compartment-level compressed air foam nozzles. The output end of the compressed air foam branches is connected to the compartment-level compressed air foam nozzles through a first zone control valve group. The module-level release device and the compartment-level compressed air foam nozzles cover the energy storage battery simulation compartment.

[0010] The data acquisition system includes a fire detection unit located inside the energy storage battery simulation chamber and electrically connected to a fire alarm control system. The data acquisition system is used to collect data on the temperature of the energy storage battery simulation chamber, and the flow and pressure of the gas extinguishing system and the compressed air foam extinguishing system.

[0011] During firefighting, the fire-fighting linkage controller controls the gas extinguishing system, the compressed air foam extinguishing system, or the combined gas extinguishing system and the compressed air foam extinguishing system to extinguish the fire in the energy storage battery simulation chamber. After the fire is extinguished, the data acquisition system collects the parameters after the fire is extinguished again and feeds them back to the fire-fighting linkage controller.

[0012] In the first technical solution mentioned above, the energy storage battery simulation chamber is equipped with a battery pack and multiple heating plates. The multiple heating plates are located at different positions in the energy storage battery simulation chamber, and the fire linkage controller is electrically connected to the heating plates to simulate the battery pack being in a thermal runaway scenario. The spray area of ​​the module-level release device covers the battery pack, and the chamber-level compressed air foam nozzle covers the chamber body of the energy storage battery simulation chamber.

[0013] In the first technical solution mentioned above, the data acquisition system includes a fourth pressure transmitter, and the top of the extinguishing agent storage container is provided with a driving device for driving the extinguishing agent in the container to spray out. The extinguishing agent storage container is connected to the corresponding connecting valve port pipeline of the first zone control valve group, and the pipeline is provided with a check valve and a fourth pressure transmitter. The fourth pressure transmitter and the driving device are electrically connected to the corresponding connection terminals of the fire linkage controller.

[0014] In the first technical solution mentioned above, the first zone control valve group includes three control valves. The extinguishing agent storage container is connected to the valve port pipeline of one of the control valves. The compressed air foam branch is simultaneously connected to the valve port pipelines of the remaining two control valves. The control valve connected to the extinguishing agent storage container and one of the control valves connected to the compressed air foam branch are simultaneously connected to the module-level release device pipeline, so that the gas extinguishing system and the compressed air foam extinguishing system share a set of module-level release devices.

[0015] In the first technical solution described above, the compressed air foam branch includes a foam liquid supply unit, a fire water supply unit, and a gas supply unit. The compressed air foam fire extinguishing system also includes a second zone control valve assembly, a liquid-liquid mixer, and a gas-liquid mixer.

[0016] The foam liquid supply unit includes a foam liquid tank and a foam liquid pump. The foam liquid tank is connected to the inlet of the foam liquid pump via a foam pipeline, and the outlet of the foam liquid pump is connected to the corresponding interface pipeline of the liquid-liquid mixer via a second zone control valve group.

[0017] The fire water supply unit includes a water storage tank and a fire pump. The water storage tank is connected to the inlet of the fire pump via a main pipeline, and the outlet of the fire pump is connected to the corresponding interface pipeline of the liquid-liquid mixer via a second zone control valve group.

[0018] The gas supply unit includes an air compressor, which is connected to the gas-liquid mixer via a second zone control valve group and a corresponding interface pipeline. The liquid-liquid mixer is connected to the gas-liquid mixer via a liquid-liquid mixing pipeline.

[0019] The gas-liquid mixer is connected to the corresponding interface of the first zone control valve group via a compressed air foam liquid pipe.

[0020] The foam liquid pump, fire pump, and second zone control valve group are electrically connected to the corresponding connection terminals of the fire linkage controller.

[0021] In the first technical solution mentioned above, the second zone control valve group includes three control valves, and the foam liquid pump, fire water pump and air compressor are respectively connected to the valve inlet of the corresponding control valve.

[0022] In the first technical solution described above, the data acquisition system also includes three pressure transmitters, two first electromagnetic flow meters, and a gas mass flow meter that are electrically connected to the fire alarm control panel.

[0023] A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the foam liquid pump and the liquid-liquid mixer of the foam liquid supply unit.

[0024] A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the fire pump and the liquid-liquid mixer of the fire water supply unit.

[0025] The gas supply unit has a gas mass flow meter and a pressure transmitter installed on the pipeline connecting the air compressor and the gas-liquid mixer.

[0026] In the first technical solution described above, the data acquisition system further includes a fifth pressure transmitter and a second electromagnetic flow meter electrically connected to the fire alarm control panel.

[0027] A fifth pressure transmitter and a second electromagnetic flowmeter are installed on the liquid-liquid mixing pipeline between the liquid-liquid mixer and the gas-liquid mixer.

[0028] In the first technical solution described above, the foam liquid supply unit further includes a foam proportioner, which is electrically connected to the foam liquid pump and is used to adjust the speed of the foam liquid pump.

[0029] In the first technical solution mentioned above, the fire detection unit includes a heat detector and a smoke detector. Both the heat detector and the smoke detector are installed in the energy storage battery simulation chamber, and the heat detector and the smoke detector are electrically connected to the corresponding connection terminals of the fire linkage controller.

[0030] In the first technical solution mentioned above, the fire extinguishing agent storage container stores liquid perfluorohexanone and liquid heptafluoropropane.

[0031] In the first technical solution mentioned above, the data acquisition system also includes a thermal imager and thermocouples electrically connected to the fire linkage controller. Thermocouples are installed around the battery pack in the energy storage battery simulation cabin to measure the surrounding temperature of the battery pack. The thermal imager is used to record the temperature of the fire burning area of ​​the battery pack and the fire video.

[0032] To achieve the above objectives, the second technical solution of the present invention is: a method for testing the fire extinguishing of batteries in an energy storage power station, comprising the aforementioned test platform for testing the fire extinguishing of batteries in an energy storage power station, the innovation of which lies in: the test method includes the following steps:

[0033] Step 1: The fire alarm control panel simulates a thermal runaway scenario for the battery pack inside the energy storage battery simulation chamber.

[0034] Step 2: Activate the data acquisition system via the fire alarm control panel to collect data on the battery pack temperature, and the flow and pressure of the gas extinguishing system and the compressed air foam extinguishing system.

[0035] Step 3: Activate one of the three fire suppression modes via the fire alarm control panel:

[0036] In gas extinguishing mode, the fire alarm control panel controls the gas extinguishing system to extinguish the fire on the battery pack.

[0037] In compressed air foam extinguishing mode, the fire alarm control panel controls the compressed air foam extinguishing system to extinguish the fire on the battery pack.

[0038] In the combined fire suppression mode, the fire alarm control system coordinates the gas extinguishing system and the compressed air foam extinguishing system to extinguish the fire in the energy storage battery simulation chamber.

[0039] After the fire is extinguished, the data acquisition system collects the parameters again and feeds them back to the fire alarm control panel.

[0040] In the second technical solution mentioned above, the fire-fighting linkage controller presets a high-temperature alarm threshold and a safe temperature value, and monitors the status value of the fire detection unit in real time. When the actual temperature of the battery pack in the energy storage battery simulation chamber is higher than the preset high-temperature alarm threshold or the fire detection unit issues an alarm signal, the fire extinguishing action is initiated.

[0041] In the second technical solution mentioned above, in the gas extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller. The fire linkage controller controls the valve corresponding to the first zone control valve group to open, and at the same time starts the gas in the extinguishing agent storage container to be sprayed out through the module-level release device for gas extinguishing and cooling. According to the signal fed back to the fire linkage controller in real time by the fire detection unit, if the high temperature parameter is lower than the preset safe temperature value of the fire linkage controller, the fire linkage controller sends a signal to the first zone control valve group and the extinguishing agent storage container, and stops supplying gas to the module-level release device after receiving the control signal.

[0042] In the second technical solution mentioned above, in the compressed air foam extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller. The fire linkage controller controls the valve port corresponding to the first zone control valve group to open and sends a signal to the compressed air foam branch. After receiving the control signal, the compressed air foam branch acts to cause the module-level release device and the chamber-level compressed air foam nozzle to foam. The fire linkage controller monitors the actual temperature data detected by the data acquisition system in real time. If the high temperature parameter is lower than the preset safe temperature value of the fire linkage controller, the fire linkage controller controls the compressed air foam branch to stop foaming.

[0043] In the second technical solution mentioned above, under the combined fire extinguishing mode, the fire linkage controller activates the gas fire extinguishing system or the compressed air foam fire extinguishing system, and starts another fire extinguishing system according to a preset intervention time. It also adjusts the fire extinguishing intensity based on the fire data detected by the fire detection unit to extinguish the fire in the battery pack. The specific steps are as follows:

[0044] The fire detection unit is divided into a module-level fire detection unit for detecting the fire status of the battery pack and a cabin-level fire detection unit for detecting the fire status of the energy storage battery simulation cabin.

[0045] When the module-level fire detection unit sends a signal to the fire suppression control unit, the fire suppression control unit, based on the parameters sent by the module-level fire detection unit, first activates the gas extinguishing system to extinguish the fire.

[0046] If the actual temperature detected by the data acquisition system is lower than the first preset temperature set by the fire alarm control panel, and remains so for a second preset time set by the fire alarm control panel without any reignition, then the gas extinguishing system will be shut down.

[0047] If the detected actual temperature is greater than the first preset temperature and there is an open flame, the gas extinguishing system is shut down and the compressed air foam extinguishing system is turned on. The fire is extinguished by spraying through the module-level release device. After the third preset time set by the fire linkage controller is reached, if the detected actual temperature is less than the second preset temperature set by the fire linkage controller and there is no reignition, the chamber-level compressed air foam nozzle is turned on.

[0048] When the actual temperature detected by the cabin-level fire detection unit is greater than the third preset temperature set by the fire linkage controller, the compressed air foam extinguishing system is activated and fire is extinguished through the cabin-level compressed air foam nozzles until there is no reignition, then the compressed air foam extinguishing system is deactivated.

[0049] In the second technical solution mentioned above, the fire-fighting linkage controller controls the heating plates at different locations inside the energy storage battery simulation chamber to heat the battery pack in a thermal runaway scenario.

[0050] The positive effects of this invention are: after adopting the energy storage power station battery fire extinguishing test platform and test method of this invention, wherein the test platform includes an energy storage battery simulation chamber, a gas fire extinguishing system, a compressed air foam fire extinguishing system, a fire linkage controller, and a data acquisition system,

[0051] The gas extinguishing system includes an extinguishing agent storage container, a first zone control valve assembly, and a module-level release device. The extinguishing agent storage container and the module-level release device are connected by piping. The first zone control valve assembly is installed on this piping and is electrically connected to the fire alarm control panel.

[0052] The compressed air foam fire extinguishing system includes compressed air foam branches and compartment-level compressed air foam nozzles. The output end of the compressed air foam branches is connected to the compartment-level compressed air foam nozzles through a first zone control valve group. The module-level release device and the compartment-level compressed air foam nozzles cover the energy storage battery simulation compartment.

[0053] The data acquisition system includes a fire detection unit located inside the energy storage battery simulation chamber and electrically connected to a fire alarm control system. The data acquisition system is used to collect data on the temperature of the energy storage battery simulation chamber, and the flow and pressure of the gas extinguishing system and the compressed air foam extinguishing system.

[0054] The specific steps of the test method are as follows: Step 1: The fire alarm control panel simulates the battery pack inside the energy storage battery compartment under a thermal runaway scenario.

[0055] Step 2: Activate the data acquisition system via the fire alarm control panel to collect data on the battery pack temperature, and the flow and pressure of the gas extinguishing system and the compressed air foam extinguishing system.

[0056] Step 3: Activate one of the three fire suppression modes via the fire alarm control panel:

[0057] In gas extinguishing mode, the fire alarm control panel controls the gas extinguishing system to extinguish the fire on the battery pack.

[0058] In compressed air foam extinguishing mode, the fire alarm control panel controls the compressed air foam extinguishing system to extinguish the fire on the battery pack.

[0059] In the combined fire suppression mode, the fire alarm control system coordinates the gas extinguishing system and the compressed air foam extinguishing system to extinguish the fire in the energy storage battery simulation chamber.

[0060] After the fire is extinguished, the data acquisition system collects the parameters again and feeds them back to the fire alarm control panel.

[0061] In this invention, by integrating a gas extinguishing system with a compressed air foam extinguishing system, it is possible to conduct performance tests of single gas extinguishing system mode and single fixed compressed air foam extinguishing system in energy storage battery compartments, as well as performance tests of multi-system combined extinguishing systems. This can provide support for the research and development and testing of extinguishing technologies for diverse energy storage battery compartments.

[0062] In this invention, the complex situation of battery pack fire in energy storage battery compartment is simulated by controlling the battery pack to be in a thermal runaway state, and the different states of battery pack fire are studied through the synergistic effect of multiple systems.

[0063] In this invention, the module-level release device and the cabin-level compressed air foam nozzle cover the energy storage battery simulation cabin, and the compressed air foam can directly penetrate and cover the battery module. The response speed is fast, and it can serve as the release device for two systems in a limited space, providing stable safety assurance for the energy storage power station. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0065] Figure 2 This is a schematic diagram of the energy storage battery simulation chamber of the present invention;

[0066] Figure 3 This is a schematic diagram of the test method provided in the embodiment of the present invention;

[0067] The diagram shows: 1. Energy storage battery simulation chamber; 11. Battery pack; 2. Gas extinguishing system; 21. Extinguishing agent storage container; 22. First zone control valve group; 23. Module-level release device; 24. Drive device; 25. Check valve; 3. Compressed air foam extinguishing system; 31. Chamber-level compressed air foam nozzle; 32. Second zone control valve group; 33. Liquid-liquid mixer; 34. Gas-liquid mixer; 35. Foam liquid tank; 36. Foam liquid pump; 37. Water tank; 38. Fire pump; 39. Air compressor; 310. Foam proportioning mixer; 4. Fire alarm control system; 5. Data acquisition system; 51. Pressure transmitter; 52. First electromagnetic flowmeter; 53. Gas mass flowmeter; 54. Fourth pressure transmitter; 55. Fifth pressure transmitter; 56. Second electromagnetic flowmeter; 57. Temperature sensor; 58. Smoke detector; 59. Thermal imager; 510. Detailed Implementation

[0068] The present invention will be further described below with reference to the accompanying drawings and the given embodiments, but is not limited thereto.

[0069] Example 1

[0070] like Figure 1 , 2As shown, a battery fire extinguishing test platform for an energy storage power station includes an energy storage battery simulation chamber 1, a gas fire extinguishing system 2, a compressed air foam fire extinguishing system 3, a fire alarm control panel 4, and a data acquisition system 5.

[0071] The gas extinguishing system 2 includes an extinguishing agent storage container 21, a first zone control valve assembly 22, and a module-level release device 23. The extinguishing agent storage container 21 and the module-level release device 23 are connected by a pipeline. The first zone control valve assembly 22 is installed on the pipeline and is electrically connected to the fire alarm control panel 4.

[0072] The compressed air foam fire extinguishing system 3 includes a compressed air foam branch and a compartment-level compressed air foam nozzle 31. The output end of the compressed air foam branch is connected to the compartment-level compressed air foam nozzle 31 through a first zone control valve group 22. The module-level release device 23 and the compartment-level compressed air foam nozzle 31 cover the energy storage battery simulation compartment 1.

[0073] The data acquisition system 5 includes a fire detection unit, which is located inside the energy storage battery simulation chamber 1 and is electrically connected to the fire alarm control panel 4. The data acquisition system 5 is used to collect data on the temperature of the energy storage battery simulation chamber 1, and the flow rate and pressure of the gas extinguishing system 2 and the compressed air foam extinguishing system 3.

[0074] During fire extinguishing, the fire-fighting linkage controller 4 controls the gas extinguishing system 2, or the compressed air foam extinguishing system 3, or the gas extinguishing system 2 and the compressed air foam extinguishing system 3 work together to extinguish the fire in the energy storage battery simulation chamber 1. After the fire is extinguished, the data acquisition system 5 collects the parameters after the fire is extinguished again and feeds them back to the fire-fighting linkage controller 4.

[0075] Furthermore, such as Figure 1 As shown, in order to simulate the complex situation of battery pack fire in the energy storage battery compartment and facilitate subsequent research on different states of battery pack fire, the energy storage battery simulation compartment 1 is equipped with battery pack 11 and multiple heating plates. The multiple heating plates are located at different positions in the energy storage battery simulation compartment 1, and the fire linkage controller 4 is electrically connected to the heating plates to simulate the battery pack 11 in a thermal runaway scenario. The spray area of ​​the module-level release device 23 covers the battery pack 11, and the compartment-level compressed air foam nozzle 31 covers the compartment body of the energy storage battery simulation compartment 1.

[0076] In this example, four heating plates are used as an example. The four electric heating plates are located at different positions in the battery pack. The heating plate power is 800W. The module-level release device 23 is set to correspond to the ignition point of the battery pack. The spray area can accurately cover each battery module, which can accurately and quickly extinguish the fire of each battery module and reduce fire losses.

[0077] Furthermore, such as Figure 1 As shown, in order to ensure unidirectional output of the extinguishing agent, prevent backflow, and obtain the pressure on the extinguishing agent output pipeline in real time, the data acquisition system 5 includes a fourth pressure transmitter 54. The top of the extinguishing agent storage container 21 is provided with a drive device 24 for driving the extinguishing agent in the container to spray out. The extinguishing agent storage container 21 is connected to the corresponding connecting valve port pipeline of the first zone control valve group 22, and the pipeline is provided with a check valve 25 and the fourth pressure transmitter 54. The fourth pressure transmitter 54 and the drive device 24 are electrically connected to the corresponding connection terminals of the fire linkage controller 4.

[0078] Furthermore, such as Figure 1 As shown, in order to facilitate the control of different fire extinguishing systems and make rapid responses, and to allow two different types of fire extinguishing systems to share a set of nozzles, reducing the number of devices and enabling compressed air foam to directly penetrate and cover the battery pack, the first zone control valve group 22 includes three control valves. The fire extinguishing agent storage container 21 is connected to the valve port pipeline of one of the control valves, and the compressed air foam branch is simultaneously connected to the valve port pipelines of the remaining two control valves. The control valve connected to the fire extinguishing agent storage container 21 and one of the control valves connected to the compressed air foam branch are simultaneously connected to the module-level release device 23 pipeline, so that the gas fire extinguishing system 2 and the compressed air foam fire extinguishing system 3 share a set of module-level release devices 23.

[0079] Furthermore, such as Figure 1 As shown, to achieve compressed air foam fire extinguishing, the compressed air foam branch includes a foam liquid supply unit, a fire water supply unit, and a gas supply unit. The compressed air foam fire extinguishing system 3 also includes a second zone control valve group 32, a liquid-liquid mixer 33, and a gas-liquid mixer 34.

[0080] The foam liquid supply unit includes a foam liquid tank 35 and a foam liquid pump 36. The foam liquid tank 35 is connected to the inlet of the foam liquid pump 36 through a foam pipeline, and the outlet of the foam liquid pump 36 is connected to the corresponding interface pipeline of the liquid-liquid mixer 33 through the second zone control valve group 32.

[0081] The fire water supply unit includes a water storage tank 37 and a fire pump 38. The water storage tank 37 is connected to the inlet of the fire pump 38 via a main pipeline, and the outlet of the fire pump 38 is connected to the corresponding interface pipeline of the liquid-liquid mixer 33 via a second zone control valve group 32.

[0082] The gas supply unit includes an air compressor 39, which is connected to the gas-liquid mixer 34 via a second zone control valve group 32 and a corresponding interface pipeline. The liquid-liquid mixer 33 is connected to the gas-liquid mixer 34 via a liquid-liquid mixing pipeline.

[0083] The gas-liquid mixer 34 is connected to the corresponding interface of the first zone control valve group 22 via a compressed air foam liquid pipe.

[0084] The foam liquid pump 36, the fire pump 38, and the second zone control valve group 32 are electrically connected to the corresponding connection terminals of the fire linkage controller 4.

[0085] Furthermore, such as Figure 1 As shown, in order to facilitate the control of different supply units, the second zone control valve group 32 includes three control valves, and the foam liquid pump 36, fire water pump 38 and air compressor 39 are respectively connected to the valve inlet of the corresponding control valve.

[0086] Furthermore, such as Figure 1 As shown, to facilitate real-time acquisition of flow and pressure on different supply unit pipelines, the data acquisition system 5 also includes three pressure transmitters 51, two first electromagnetic flow meters 52, and a gas mass flow meter 53, all electrically connected to the fire alarm control panel 4.

[0087] A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the foam liquid pump 36 and the liquid-liquid mixer 33 of the foam liquid supply unit.

[0088] A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the fire pump 38 and the liquid-liquid mixer 33 of the fire water supply unit.

[0089] The gas supply unit has a gas mass flow meter 53 and a pressure transmitter installed on the pipeline connecting the air compressor 39 and the gas-liquid mixer 34.

[0090] Furthermore, such as Figure 1 As shown, to facilitate the acquisition of pressure and flow rate on the compressed air foam pipeline, the data acquisition system 5 also includes a fifth pressure transmitter 55 and a second electromagnetic flow meter 56 electrically connected to the fire alarm control panel 4.

[0091] A fifth pressure transmitter 55 and a second electromagnetic flowmeter 56 are provided on the liquid-liquid mixing pipeline between the liquid-liquid mixer 33 and the gas-liquid mixer 34.

[0092] Furthermore, such as Figure 1 As shown, in order to facilitate the adjustment of the foam liquid pump speed, the foam liquid supply unit also includes a foam proportioner 310, which is electrically connected to the foam liquid pump 36 and is used to adjust the foam liquid pump speed.

[0093] In this embodiment, the chamber-level compressed air foam nozzle 31 is installed at a high position. The air compressor 39 of the compressed air pipeline adjusts the gas-liquid mixing ratio. The valve opening of the second zone control valve group 32 is adjusted according to the foam solution flow rate measured by the electromagnetic flowmeter between the output end of the foam proportioner 310 and the input end of the gas-liquid mixer 34.

[0094] Furthermore, such as Figure 1 As shown, in order to detect fire temperature and smoke signals, the fire detection unit includes a heat detector 57 and a smoke detector 58. Both the heat detector 57 and the smoke detector 58 are installed in the energy storage battery simulation chamber 1, and the heat detector 57 and the smoke detector 58 are electrically connected to the corresponding connection terminals of the fire linkage controller 4.

[0095] Furthermore, the fire extinguishing agent storage container 21 of the present invention stores liquid perfluorohexanone and liquid heptafluoropropane. Specifically, the fire extinguishing agent storage container 21 is also simultaneously filled with nitrogen gas, so that its internal pressure range is 2.5MPa to 4.2MPa, and the pressure is preferably below 2.5MPa or 4.2MPa, in order to facilitate the effective spraying of the fire extinguishing agent.

[0096] Furthermore, such as Figure 1 As shown, in order to obtain fire temperature and fire video, the data acquisition system 5 also includes a thermal imager 59 and a thermocouple 510 electrically connected to the fire linkage controller 4. Thermocouples 510 are installed around the battery pack 11 in the energy storage battery simulation chamber 1 to measure the surrounding temperature of the battery pack. The thermal imager 59 is used to record the temperature of the fire burning area of ​​the battery pack and the fire video.

[0097] In this example, the fire alarm control system is based on a microcontroller and also has a data processing module and a data output module that are electrically connected to the microcontroller. The data processing module receives parameters sent from the data acquisition system 5, processes them, and sends them to the microcontroller. The microcontroller then sends different control signals to the data output module, which controls the actions of different actuators.

[0098] The fire linkage controller 4 is used to receive fire characteristic parameters from the fire detection unit, issue linkage control signals according to preset logic, send control signals to fire pumps, foam pumps, and zone control valves, and receive feedback signals from controlled components and transmit them to the fire linkage controller.

[0099] Example 2

[0100] like Figure 1 , 3 As shown, a method for testing the fire extinguishing of batteries in an energy storage power station includes the aforementioned test platform for testing batteries in an energy storage power station. The test method includes the following steps:

[0101] Step 1: The fire alarm control panel 4 causes the battery pack 11 in the energy storage battery simulation chamber 1 to be in thermal runaway. Specifically, the fire alarm control panel 4 controls the heating plates at different locations in the energy storage battery simulation chamber 1 to heat up, causing the battery pack 11 to be in a thermal runaway scenario.

[0102] Step 2: Activate the data acquisition system 5 via the fire alarm control panel 4 to collect data on the battery pack temperature, the flow rate and pressure of the gas extinguishing system 2 and the compressed air foam extinguishing system 3.

[0103] Step 3: Activate one of the three fire suppression modes via the fire alarm control panel 4:

[0104] In gas extinguishing mode, the fire alarm control panel 4 controls the gas extinguishing system 2 to extinguish the fire on the battery pack.

[0105] In compressed air foam extinguishing mode, the fire alarm control panel 4 controls the compressed air foam extinguishing system 3 to extinguish the fire on the battery pack.

[0106] In the combined fire suppression mode, the fire alarm control panel 4 controls the gas extinguishing system 2 and the compressed air foam extinguishing system 3 to work together to extinguish the fire in the energy storage battery simulation chamber 1.

[0107] After the fire is extinguished, the data acquisition system 5 collects the parameters again and feeds them back to the fire alarm control panel 4.

[0108] Furthermore, in order to enable different fire extinguishing systems to operate under the preset logic of the fire linkage controller 4, the fire linkage controller 4 presets a high temperature alarm threshold and a safe temperature value, and monitors the status value of the fire detection unit in real time. When the actual temperature of the battery pack in the energy storage battery simulation chamber 1 is higher than the preset high temperature alarm threshold or the fire detection unit issues an alarm signal, the fire extinguishing action is initiated.

[0109] Furthermore, in gas extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller 4. The fire linkage controller 4 controls the valve corresponding to the first zone control valve group 22 to open, and at the same time starts the gas in the extinguishing agent storage container 21 to be sprayed out through the module-level release device 23 for gas extinguishing and cooling. According to the signal fed back to the fire linkage controller 4 in real time by the fire detection unit, if the high temperature parameter is lower than the preset safe temperature value of the fire linkage controller 4, the fire linkage controller 4 sends a signal to the first zone control valve group 22 and the extinguishing agent storage container 21, and stops supplying gas to the module-level release device 23 after receiving the control signal.

[0110] Furthermore, in the compressed air foam extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller 4. The fire linkage controller 4 controls the valve port corresponding to the first zone control valve group 22 to open and sends a signal to the compressed air foam branch. After receiving the control signal, the compressed air foam branch acts to cause the module-level release device 23 and the chamber-level compressed air foam nozzle 31 to foam. The fire linkage controller 4 monitors the actual temperature data detected by the data acquisition system 5 in real time. If the high temperature parameter is lower than the preset safe temperature value of the fire linkage controller 4, the fire linkage controller 4 controls the compressed air foam branch to stop foaming.

[0111] Furthermore, in the joint fire suppression mode, the fire alarm control panel 4 activates the gas extinguishing system 2 or the compressed air foam extinguishing system 3, and starts another extinguishing system according to a preset intervention time. It also adjusts the fire suppression intensity based on the fire data detected by the fire detection unit to extinguish the fire in the battery pack. The specific steps are as follows:

[0112] The fire detection unit is divided into a module-level fire detection unit for detecting the fire status of the battery pack and a cabin-level fire detection unit for detecting the fire status of the energy storage battery simulation cabin.

[0113] When the module-level fire detection unit sends a signal to the fire alarm control panel 4, the fire alarm control panel 4, based on the parameters sent by the module-level fire detection unit, first activates the gas extinguishing system 2 to extinguish the fire.

[0114] If the actual temperature detected by the data acquisition system 5 is lower than the first preset temperature set by the fire alarm control panel 4, and remains so for a second preset time set by the fire alarm control panel 4, and there is no reignition, then the gas extinguishing system 2 will be shut down.

[0115] If the detected actual temperature is greater than the first preset temperature and there is an open flame, the gas extinguishing system 2 is shut down and the compressed air foam extinguishing system 3 is turned on. The fire is extinguished by spraying through the module-level release device 23. After the third preset time set by the fire linkage controller 4 is reached, if the detected actual temperature is less than the second preset temperature set by the fire linkage controller 4 and there is no reignition, the chamber-level compressed air foam nozzle 31 is turned on.

[0116] When the actual temperature detected by the cabin-level fire detection unit is greater than the third preset temperature set by the fire linkage controller 4, the compressed air foam extinguishing system 3 is turned on and the fire is extinguished by spraying through the cabin-level compressed air foam nozzle 31 until there is no reignition, then the compressed air foam extinguishing system 3 is turned off.

[0117] In summary, by integrating a gaseous fire extinguishing system with a compressed air foam fire extinguishing system, this invention can conduct performance tests on single gaseous fire extinguishing system modes and single fixed compressed air foam fire extinguishing systems for energy storage battery compartments, as well as performance tests on fire extinguishing systems used in combination with multiple systems. This provides support for the research and development and testing of fire extinguishing technologies for diverse energy storage battery compartments.

[0118] In this invention, the complex situation of battery pack fire in energy storage battery compartment is simulated by controlling the battery pack to be in thermal runaway, and the different states of battery pack fire are studied through the synergistic effect of multiple systems.

[0119] In this invention, a module-level release device and a chamber-level compressed air foam nozzle cover the energy storage battery simulation chamber. The gas fire extinguishing system and the compressed air foam fire extinguishing system share a set of nozzles (module-level release device), which reduces the number of devices and allows the compressed air foam to directly penetrate and cover the battery modules. It has a fast response speed and can serve as a release device for two systems in a limited space, providing stable safety assurance for the energy storage power station.

[0120] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A battery fire extinguishing test platform for an energy storage power station, characterized in that: It includes an energy storage battery simulation chamber (1), a gas fire extinguishing system (2), a compressed air foam fire extinguishing system (3), a fire linkage controller (4), and a data acquisition system (5). The gas extinguishing system (2) includes an extinguishing agent storage container (21), a first zone control valve group (22), and a module-level release device (23). The extinguishing agent storage container (21) and the module-level release device (23) are connected by a pipeline. The first zone control valve group (22) is installed on the pipeline and is electrically connected to the fire linkage controller (4). The compressed air foam fire extinguishing system (3) includes a compressed air foam branch and a cabin-level compressed air foam nozzle (31). The output end of the compressed air foam branch is connected to the cabin-level compressed air foam nozzle (31) through the first zone control valve group (22). The module-level release device (23) and the cabin-level compressed air foam nozzle (31) cover the energy storage battery simulation cabin (1). The data acquisition system (5) includes a fire detection unit, which is located inside the energy storage battery simulation chamber (1) and is electrically connected to the fire alarm control unit (4). The data acquisition system (5) is used to collect the temperature of the energy storage battery simulation chamber (1), the flow rate and pressure of the gas extinguishing system (2) and the compressed air foam extinguishing system (3). During fire extinguishing, the fire-fighting linkage controller (4) controls the gas fire extinguishing system (2), or the compressed air foam fire extinguishing system (3), or the gas fire extinguishing system (2) and the compressed air foam fire extinguishing system (3) work together to extinguish the fire in the energy storage battery simulation chamber (1). After the fire is extinguished, the data acquisition system (5) collects the parameters after the fire is extinguished again and feeds them back to the fire-fighting linkage controller (4).

2. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The energy storage battery simulation chamber (1) is equipped with a battery pack (11) and multiple heating plates. The multiple heating plates are located in different positions within the energy storage battery simulation chamber (1), and the fire linkage controller (4) is electrically connected to the heating plates to simulate the battery pack (11) being in a thermal runaway scenario. The spray area of ​​the module-level release device (23) covers the battery pack (11), and the chamber-level compressed air foam nozzle (31) covers the chamber body of the energy storage battery simulation chamber (1).

3. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The data acquisition system (5) includes a fourth pressure transmitter (54). The top of the extinguishing agent storage container (21) is provided with a driving device (24) for driving the extinguishing agent in the container to spray out. The extinguishing agent storage container (21) is connected to the corresponding connecting valve port pipeline of the first zone control valve group (22). The pipeline is provided with a check valve (25) and a fourth pressure transmitter (54). The fourth pressure transmitter (54) and the driving device (24) are electrically connected to the corresponding connection terminals of the fire linkage controller (4).

4. The energy storage power station battery fire extinguishing test platform according to claim 3, characterized in that: The first zone control valve group (22) includes three control valves. The extinguishing agent storage container (21) is connected to the valve port pipeline of one of the control valves. The compressed air foam branch is connected to the valve port pipelines of the remaining two control valves. The control valve connected to the extinguishing agent storage container (21) and one of the control valves connected to the compressed air foam branch are connected to the module-level release device (23) pipeline, so that the gas extinguishing system (2) and the compressed air foam extinguishing system (3) share a set of module-level release devices (23).

5. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The compressed air foam branch includes a foam liquid supply unit, a fire water supply unit and a gas supply unit. The compressed air foam fire extinguishing system (3) also includes a second zone control valve group (32), a liquid-liquid mixer (33) and a gas-liquid mixer (34). The foam liquid supply unit includes a foam liquid tank (35) and a foam liquid pump (36). The foam liquid tank (35) is connected to the inlet of the foam liquid pump (36) through a foam pipeline. The outlet of the foam liquid pump (36) is connected to the corresponding interface pipeline of the liquid-liquid mixer (33) through the second zone control valve group (32). The fire water supply unit includes a water storage tank (37) and a fire pump (38). The water storage tank (37) is connected to the inlet of the fire pump (38) through a main pipeline, and the outlet of the fire pump (38) is connected to the corresponding interface pipeline of the liquid-liquid mixer (33) through the second zone control valve group (32). The gas supply unit includes an air compressor (39), which is connected to the gas-liquid mixer (34) via a second zone control valve group (32) and corresponding interface pipes. The liquid-liquid mixer (33) is connected to the gas-liquid mixer (34) via a liquid-liquid mixing pipe. The gas-liquid mixer (34) is connected to the corresponding interface of the first zone control valve group (22) through a compressed air foam liquid pipe. The foam pump (36), fire pump (38), and second zone control valve group (32) are electrically connected to the corresponding connection terminals of the fire linkage controller (4).

6. The energy storage power station battery fire extinguishing test platform according to claim 5, characterized in that: The second zone control valve group (32) includes three control valves, and the foam liquid pump (36), fire water pump (38) and air compressor (39) are respectively connected to the valve inlet of the corresponding control valve.

7. The energy storage power station battery fire extinguishing test platform according to claim 5, characterized in that: The data acquisition system (5) also includes three pressure transmitters (51), two first electromagnetic flowmeters (52), and a gas mass flowmeter (53) that are electrically connected to the fire linkage controller (4). A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the foam liquid pump (36) and the liquid-liquid mixer (33) of the foam liquid supply unit. A pressure transmitter and a first electromagnetic flow meter are installed on the pipeline connecting the fire pump (38) and the liquid-liquid mixer (33) of the fire water supply unit. A gas mass flow meter (53) and a pressure transmitter are provided on the pipeline connecting the air compressor (39) and the gas-liquid mixer (34) of the gas supply unit.

8. The energy storage power station battery fire extinguishing test platform according to claim 5, characterized in that: The data acquisition system (5) also includes a fifth pressure transmitter (55) and a second electromagnetic flow meter (56) that are electrically connected to the fire linkage controller (4). A fifth pressure transmitter (55) and a second electromagnetic flowmeter (56) are provided on the liquid-liquid mixing pipeline between the liquid-liquid mixer (33) and the gas-liquid mixer (34).

9. The energy storage power station battery fire extinguishing test platform according to claim 7, characterized in that: The foam liquid supply unit also includes a foam proportioner (310), which is electrically connected to the foam liquid pump (36) and is used to adjust the speed of the foam liquid pump.

10. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The fire detection unit includes a heat detector (57) and a smoke detector (58). The heat detector (57) and the smoke detector (58) are both located in the energy storage battery simulation chamber (1), and the heat detector (57) and the smoke detector (58) are electrically connected to the corresponding connection terminals of the fire linkage controller (4).

11. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The fire extinguishing agent storage container (21) contains liquid perfluorohexanone and liquid heptafluoropropane.

12. The energy storage power station battery fire extinguishing test platform according to claim 1, characterized in that: The data acquisition system (5) also includes a thermal imager (59) and a thermocouple (510) electrically connected to the fire linkage controller (4). Thermocouples (510) are installed around the battery pack (11) in the energy storage battery simulation chamber (1) to measure the ambient temperature of the battery pack. The thermal imager (59) is used to record the temperature of the battery pack fire combustion area and fire video.

13. A method for testing the fire extinguishing of batteries in an energy storage power station, comprising the fire extinguishing test platform for batteries in an energy storage power station as described in any one of claims 1-12, characterized in that: The test method includes the following steps: Step 1: The fire alarm control panel (4) puts the battery pack (11) in the energy storage battery simulation chamber (1) into a thermal runaway scenario. Step 2: Activate the data acquisition system (5) via the fire alarm control panel (4) to collect data on the battery pack temperature, the flow rate and pressure of the gas extinguishing system (2) and the compressed air foam extinguishing system (3). Step 3: Activate one of the three fire extinguishing modes via the fire alarm control panel (4): In gas extinguishing mode, the fire alarm control panel (4) controls the gas extinguishing system (2) to extinguish the fire on the battery pack. In the compressed air foam extinguishing mode, the fire linkage controller (4) controls the compressed air foam extinguishing system (3) to extinguish the fire on the battery pack. In the combined fire suppression mode, the fire linkage controller (4) controls the gas fire suppression system (2) and the compressed air foam fire suppression system (3) to work together to extinguish the fire in the energy storage battery simulation chamber (1). After the fire is extinguished, the data acquisition system (5) collects the parameters after the fire is extinguished again and feeds them back to the fire linkage controller (4).

14. The fire extinguishing test method for batteries in an energy storage power station according to claim 13, characterized in that: The fire alarm control panel (4) presets a high temperature alarm threshold and a safe temperature value, and monitors the status value of the fire detection unit in real time. When the actual temperature of the battery pack in the energy storage battery simulation chamber (1) is higher than the preset high temperature alarm threshold or the fire detection unit issues an alarm signal, the fire extinguishing action is initiated.

15. The fire extinguishing test method for batteries in an energy storage power station according to claim 13, characterized in that: In the gas extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller (4). The fire linkage controller (4) controls the valve corresponding to the first zone control valve group (22) to open, and at the same time starts the gas in the extinguishing agent storage container (21) to be sprayed out through the module-level release device (23) for gas extinguishing and cooling. According to the signal fed back to the fire linkage controller (4) in real time by the fire detection unit, if the high temperature point parameter is lower than the preset safe temperature value of the fire linkage controller (4), the fire linkage controller (4) sends a signal to the first zone control valve group (22) and the extinguishing agent storage container (21), and stops supplying gas to the module-level release device (23) after receiving the control signal.

16. The fire extinguishing test method for batteries in an energy storage power station according to claim 13, characterized in that: In the compressed air foam extinguishing mode, the temperature and smoke concentration parameters collected by the fire detection unit are sent to the fire linkage controller (4). The fire linkage controller (4) controls the valve port corresponding to the first zone control valve group (22) to open and sends a signal to the compressed air foam branch. After receiving the control signal, the compressed air foam branch acts to make the module-level release device (23) and the chamber-level compressed air foam nozzle (31) foam. The fire linkage controller (4) monitors the actual temperature data detected by the data acquisition system (5) in real time. If the high temperature point parameter is lower than the preset safe temperature value of the fire linkage controller (4), the fire linkage controller (4) controls the compressed air foam branch to stop foaming.

17. The fire extinguishing test method for batteries in an energy storage power station according to claim 13, characterized in that: In the joint fire extinguishing mode, the fire linkage controller (4) activates the gas fire extinguishing system (2) or the compressed air foam fire extinguishing system (3), and starts another fire extinguishing system according to the preset intervention time. In addition, it adjusts the fire extinguishing intensity based on the fire data detected by the fire detection unit to extinguish the fire on the battery pack. The specific steps are as follows: The fire detection unit is divided into a module-level fire detection unit for detecting the fire status of the battery pack and a cabin-level fire detection unit for detecting the fire status of the energy storage battery simulation cabin. When the module-level fire detection unit sends a signal to the fire alarm control panel (4), the fire alarm control panel (4) first activates the gas extinguishing system (2) to extinguish the fire based on the parameters sent by the module-level fire detection unit. If the actual temperature detected by the data acquisition system (5) is less than the first preset temperature set by the fire linkage controller (4), and continues for a second preset time set by the fire linkage controller (4), and there is no reignition, then the gas extinguishing system (2) is shut down. If the actual temperature detected is greater than the first preset temperature and there is an open flame, the gas extinguishing system (2) is shut down and the compressed air foam extinguishing system (3) is opened. The fire is extinguished by spraying through the module-level release device (23). After the third preset time set by the fire linkage controller (4) is reached, if the actual temperature detected is less than the second preset temperature set by the fire linkage controller (4) and there is no reignition, the cabin-level compressed air foam nozzle (31) is opened. When the actual temperature detected by the cabin-level fire detection unit is greater than the third preset temperature set by the fire linkage controller (4), the compressed air foam extinguishing system (3) is turned on and the fire is extinguished by spraying through the cabin-level compressed air foam nozzle (31) until there is no reignition, then the compressed air foam extinguishing system (3) is turned off.

18. The fire extinguishing test method for batteries in an energy storage power station according to claim 13, characterized in that: The fire-fighting linkage controller (4) controls the heating plates at different locations in the energy storage battery simulation chamber (1) to heat up, so that the battery pack (11) is in a thermal runaway scenario.

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